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hhŒ	_document”hŒsource”NŒline”NubhŒcomment”“”)”}”(hŒ SPDX-License-Identifier: GPL-2.0”h]”hŒ SPDX-License-Identifier: GPL-2.0”…””}”hh£sbah}”(h]”h ]”h"]”h$]”h&]”Œ	xml:space”Œpreserve”uh1h¡hhhžhhŸŒ?/var/lib/git/docbuild/linux/Documentation/arch/mips/booting.rst”h KubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒBMIPS DeviceTree Booting”h]”hŒBMIPS DeviceTree Booting”…””}”(hh»hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¹hh¶hžhhŸh³h KubhŒblock_quote”“”)”}”(hXµ  Some bootloaders only support a single entry point, at the start of the
kernel image.  Other bootloaders will jump to the ELF start address.
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Similar to the arch/arm case (b), a DT-aware bootloader is expected to
set up the following registers:

       a0 : 0

       a1 : 0xffffffff

       a2 : Physical pointer to the device tree block (defined in chapter
       II) in RAM.  The device tree can be located anywhere in the first
       512MB of the physical address space (0x00000000 - 0x1fffffff),
       aligned on a 64 bit boundary.

Legacy bootloaders do not use this convention, and they do not pass in a
DT block.  In this case, Linux will look for a builtin DTB, selected via
CONFIG_DT_*.

This convention is defined for 32-bit systems only, as there are not
currently any 64-bit BMIPS implementations.”h]”(hŒ	paragraph”“”)”}”(hX  Some bootloaders only support a single entry point, at the start of the
kernel image.  Other bootloaders will jump to the ELF start address.
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so the first instruction immediately jumps to kernel_entry().”h]”hX  Some bootloaders only support a single entry point, at the start of the
kernel image.  Other bootloaders will jump to the ELF start address.
Both schemes are supported; CONFIG_BOOT_RAW=y and CONFIG_NO_EXCEPT_FILL=y,
so the first instruction immediately jumps to kernel_entry().”…””}”(hhÑhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÏhŸh³h KhhËubhÐ)”}”(hŒfSimilar to the arch/arm case (b), a DT-aware bootloader is expected to
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set up the following registers:”…””}”(hhßhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÏhŸh³h KhhËubhÊ)”}”(hŒûa0 : 0

a1 : 0xffffffff

a2 : Physical pointer to the device tree block (defined in chapter
II) in RAM.  The device tree can be located anywhere in the first
512MB of the physical address space (0x00000000 - 0x1fffffff),
aligned on a 64 bit boundary.
”h]”(hÐ)”}”(hŒa0 : 0”h]”hŒa0 : 0”…””}”(hhñhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÏhŸh³h KhhíubhÐ)”}”(hŒa1 : 0xffffffff”h]”hŒa1 : 0xffffffff”…””}”(hhÿhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hÏhŸh³h KhhíubhÐ)”}”(hŒáa2 : Physical pointer to the device tree block (defined in chapter
II) in RAM.  The device tree can be located anywhere in the first
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